00450nam a2200181Ia 4500008004100000041001200041082001100053082001100064100001700075100001100092245005000103260001300153260003400166260000900200300001500209650002400224650002000248150909s9999    xx            000 0 und d  aEnglish  a333.91  bPAV/HA  aPavoni J L    eEditor  aHandbook of water quality management planning  aNew York  bVan Nostrand Reinhold Company  c1977  a419  Pages  aResources economics  aWater treatment